3-652: The Pacific Subtropical Islands is an interim Australian bioregion which includes Norfolk Island and Lord Howe Island (both part of New South Wales ). Its IBRA code is PSI. Norfolk and Lord Howe Islands constitute the Norfolk Islands , a Level 3 biogeographic unit (aka botanical country) in the World Geographical Scheme for Recording Plant Distributions . Interim Biogeographic Regionalisation of Australia The Interim Biogeographic Regionalisation for Australia ( IBRA )
6-535: A major part of the Australasia biogeographic realm, as developed by the World Wide Fund for Nature . Based on this system, the world is also split into 14 terrestrial habitats , of which eight are shared by Australia. The Australian land mass is divided into 89 bioregions and 419 subregions. Each region is a land area made up of a group of interacting ecosystems that are repeated in similar form across
9-460: Is a biogeographic regionalisation of Australia developed by the Australian government's Department of Sustainability, Environment, Water, Population, and Communities . It was developed for use as a planning tool, for example for the establishment of a national reserve system . The first version of IBRA was developed in 1993–94 and published in 1995. Within the broadest scale, Australia is
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